Tuyere



2 Sheets-Sheet '1. W. I. MANN.

TUYER'E.

(N0 Model.)

Patented Mar. 3, 1885.

(No Model.) 2 SheetsSheet 2.

W. 1. MANN TUYERE.

No.- 313,088. Patented'Mar. 3, 1885.

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*Uwrran dramas Parana tries,

\VILLIAM I. MANN, OF BENVOOD, \VEST VIRGINIA.

TUYERE.

SPECIFICATION forming part of Letters Patent No. 313,088,61ated March 3, 1885.

Application filed May 5, 1%84 (No model.)

1'0 all whom it may concern.-

Be it known that I, WILLIAM I. :MANN, of Benwood, in the county of Marshall and State of West Virginia, have invented a new and useful Improvementin Tuyeres; and I do hereby declare that the following is a full, clear, and exact description of the same.

My invention is an improvement in tuyeres. It is adapted to be used in connection with apparatus for applyiu g the Bessemer process in the manufacture of steel, in which air is driven through the charge ofmelted iron under treatment. As the tuyeres are necessarily be low the surface of the metal during the blow ing process, cessation of the blast when the charge is blown will, if the tuyeres remain in this position, cause the melted iron to run into and destroy them.

In order to avoid the necessity of a tilting converter, many expedients have been devised, in connection with a fixed con verter,to perfect the ,tuyere. One of thesedevices is toprovide a small stream of blast passing through the tuyere after the main supply has been cut off by the tuyere-plug, the streambeingjustlarge enough to keep the molten metal out of the tuyere without seriously oxidizing the-iron. Such a device is shown in Letters Patent of the United States No. 271,683, and in others. My object has been to simplify and improve the operating devices.

In the accompanying drawings, Figure 1 shows a section through a wind-box and part of a converter to which it is attached, the apparatus for operating the tuyere being shown in side elevation. Fig. 2 is a front view of the wedge. Fig. 3 is a plan of the whole.

The plug A may be of the ordinary construction; but I prefer the construction shown in the fignre,which consists of a removable nose, h, held to the stem a by a sleeve, H, adapted to receive and hold it thereto. plug are bored to connect with the pipe 50, attached to the stem by asuitable coupling, for introducing a stream of non-oxidizing gas, or whatever may be required. A small transverse hole, I), may be provided in the nose or plug opening into the wind-box B, through which a small stream of air may be introduced through the tuyere when the plug is closed and it is not desired to use the pipe 0:. The

The stem andwind-box is provided with an ordinary blastpipe, 0, and stuffing-box D, through which the stem a passes. To the face of the windbox I havefixed abridge, E, theapex of which 5 is bored in the line of the stem a, and through it the stem passes, being adapted to move freely therein. On the bridge above and below the stem are pivoted rollers I 1, adapted to bear against the face of a wedge, F. The other face of this wedge bears against similar rollers, 3 3, pivoted on the stem in front of the collar 4:,fixed thereto. Between the collar and the apex of the bridge is a spring, 5, which tends to keep the plug pressed to its seat on 6 the tuyere. The wedge F is slotted to receive the stem a, and is provided with aweight, H,

sufficiently heavy to draw down the wedge,

com-press the spring, and draw back. the plug. The wedge is connected with any suitable rope and pulley or devices for raisingit for the pur pose of allowing the spring to close the plug upon its seat.

In the end of the coupling G, in line with the bore of the stem a, is a sight-opening, g, 7 covered by a glass plate. 7 I

The stuflingbox Dis formed with the convex flange d for connecting it with the concave face of the wind-box. The flange is formed with holes of larger diameter than the bolts, .so that the stem may be adjusted in line accurately with the tuyere-opening. Theenlarged holes and spherical faces permit suificient movement for this purpose. A

It will be manifest that I may apply air, liquid or gaseous fuel, steam, or any liquid or gaseous substance through the pipe as, as may be desired for different purposes.

I have represented the wedge as arrange? Win-W in a vertical position; but it may be also 0 placed in a horizontal position orat anyangle.

I prefer the removable nose for the plug, as it may be renewed when worn without much expeuse,and without throwing away the whole piece.

What I claim as new, and desire to secure by Letters Patent, is

1. In combination with the tuyere of a con verter or other furnace, the plug provided with the stem, a spring and wedge, and a :00 suitable bridge, substantially as described, and for the purpose set forth. I

2. The combination,with the tuyere; of the plug and its stem, connected to the pipe 00, and suitable mechanism for operating the plug, as set forth.

3. In combination with the tuyere, the perforated plug and stem, the coupling having the sight: opening 9 and transparent diaphragmq, with mechanism, substantially as described, for operating the plug.

5. The combination, with the tuyere and the wind-box, ofthe perforated plug and stem, 1 the bridge E, provided with anti-friction rollers, a collar and rollers upon the stem, the spring 5, and the Wedge F, all substantially as described.

In testimony whereof I have signed my 20 name to this specification in the presence of two subscribing witnesses.

WM. I. MANN.

Witnesses:

J A0013 ALTMEYERS, HENRY F. LINDEMAN. 

